ERROR: Unable to find method 'org.gradle.api.tasks.TaskInputs.file(Ljava/lang/Object;)Lorg/gradle/api/tasks/TaskInputs;'

The Sync output displays the following:

ERROR: Unable to find method ‘org.gradle.api.tasks.TaskInputs.file(Ljava/lang/Object;)Lorg/gradle/api/tasks/TaskInputs;’.
Possible causes for this unexpected error include:
Gradle’s dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
Re-download dependencies and sync project (requires network)

The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
Stop Gradle build processes (requires restart)

Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

I am upgrading to gradle 5.1.1 and android gradle plugin 3.4.1, and it fails to build. Can anyone please help me out on this?


Hi Roger,

there is a breaking change in Gradle 5. See the upgrading from Gradle 4 guide. That means one of your plugins is using that old API. You can find out which one by running your build with Gradle 4.10 as suggested in the upgrading guide as well.